Why not "double schizophrenia"?

The current approach to schizophrenic psychoses comprises the concept of a course characterized by a prodromal phase, an intermittent acute phase, and residual formation. Similar to the concept of the so-called double depression, there are, in addition to the subgroups of patients with primarily cognitive changes, patients in whom neurotic-dissociative components dominate prior to the disease outbreak itself. The question arises whether this process, considered thus far as prodromal, may possibly be interpreted beyond this as a combined pattern of progression in the sense of a "double schizophrenia" and thus differ symptomatically in the further course from other forms of schizophrenia. If so, in addition to the usual neuroleptic treatment, therapy should include an additional focus with more psychotherapeutic attention.